Display panel driving method, driving device, debugging method and display device

Abstract

The present invention provides a driving method, a driving device, a debugging method, and a display device for a display panel, wherein the display panel includes a plurality of display pixels located in a display area, a plurality of redundant pixels located in a non-display area to one side of the display area, a plurality of gate lines extending along a first direction, and a plurality of data lines along a second direction intersecting the first direction. The driving method includes: detecting whether a to-be-displayed image is a preset image, wherein the preset image is specifically an image in which the plurality of display pixels are alternately arranged along the first and second directions according to a first brightness and a second brightness, the first brightness being greater than the second brightness; and if so, controlling at least one row of redundant pixels among the plurality of redundant pixels to maintain consistency in data signal and polarity with a first row of display pixels among the plurality of display pixels, wherein the at least one row of redundant pixels is arranged adjacent to the first row of display pixels, to avoid poor green emission in the first row.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a driving method, a driving device, a debugging method and a display device of a display panel. Background Art

[0002] With the rapid development of high-end desktop displays (MNTs), the development and design of related products has become an inevitable trend. High-resolution, high-refresh-rate products are gradually becoming the mainstream in the market. In particular, display panels, as the component that enables the display function of electronic devices, are typically tested before shipment to ensure quality.

[0003] To improve the charging rate, the pixel architecture of the display panel is usually designed as a single gate structure. First, the gate line of the first row is turned on, and the data line charges the pixels in the first row. Then, the gate line of the second row is turned on, and the gate line of the first row is turned off at the same time, and the data line charges the pixels in the second row, and so on. Especially when using special pattern (Pattern) screens, such as the 1dot screen (Skip 1dot screen, also known as 1V1H screen), the common electrode is coupled upward by the data signal (Couple), causing the common voltage potential to be pulled up, resulting in the green defect of the first row. Summary of the Invention

[0004] The present invention provides a driving method, a driving device, a debugging method and a display device of a display panel, which are used to avoid poor green emission of the first row.

[0005] In a first aspect, an embodiment of the present invention provides a method for driving a display panel, wherein the display panel includes a plurality of display pixels located in a display area, a plurality of redundant pixels located in a non-display area to one side of the display area, a plurality of gate lines extending along a first direction, and a plurality of data lines along a second direction intersecting the first direction, wherein the plurality of display pixels and the plurality of redundant pixels are arranged in an array, each of the display pixels includes a plurality of sub-pixels electrically connected to the same gate line, and along the second direction, two adjacent sub-pixels are electrically connected to different data lines, respectively, and the polarities of data signals transmitted by the two adjacent data lines are opposite. The method includes:

[0006] When the image to be displayed is a preset image, at least one row of redundant pixels among the plurality of redundant pixels is controlled to maintain consistency with data signals and polarities of a first row of display pixels among the plurality of display pixels, wherein the at least one row of redundant pixels is arranged adjacent to the first row of display pixels, and the preset image is specifically an image in which the plurality of display pixels are alternately arranged according to a first brightness and a second brightness along both the first direction and the second direction, and the first brightness is greater than the second brightness.

[0007] In a possible implementation, controlling the data signals and polarities of at least one row of redundant pixels among the plurality of redundant pixels to be consistent with those of the first row of display pixels among the plurality of display pixels includes:

[0008] Before charging the first row of display pixels, the data signals and polarities of the first row of display pixels are transmitted to each of the data lines, the at least one row of redundant pixels is charged, and the data signals and polarities of the at least one row of redundant pixels are controlled to be consistent with those of the first row of display pixels.

[0009] In a possible implementation, before charging the first row of display pixels, transmitting the data signals and polarities of the first row of display pixels to each of the data lines includes:

[0010] Before charging the first row of display pixels, determining the data signal and polarity of the first row of display pixels;

[0011] placing the data signals and polarities of the first row of display pixels in a buffer register;

[0012] The data signals and polarities of the first row of display pixels are transmitted to each of the data lines through the buffer register.

[0013] In a possible implementation, before controlling the data signals and polarities of at least one row of redundant pixels among the plurality of redundant pixels to be consistent with those of the first row of display pixels among the plurality of display pixels, the method further includes:

[0014] detecting whether there are more than a preset number of pixel detection units in the image to be displayed, wherein the pixel detection units include at least one group of two display pixels arranged alternately along the first direction according to the first brightness and the second brightness, and at least one group of two display pixels arranged alternately along the second direction according to the first brightness and the second brightness;

[0015] If so, it is determined that the picture to be displayed is a preset picture.

[0016] In a second aspect, an embodiment of the present invention further provides a driving device for a display panel, comprising:

[0017] a receiving unit, configured to receive an image to be displayed from the display panel, wherein the display panel includes a plurality of display pixels located in a display area, a plurality of redundant pixels located in a non-display area on one side of the display area, a plurality of gate lines extending along a first direction, and a plurality of data lines along a second direction intersecting the first direction, wherein the plurality of display pixels and the plurality of redundant pixels are arranged in an array, each of the display pixels includes a plurality of sub-pixels electrically connected to the same gate line, and along the second direction, two adjacent sub-pixels are electrically connected to different data lines, respectively, and the polarities of data signals transmitted by the two adjacent data lines are opposite;

[0018] a processing unit, configured to control, when the image to be displayed is a preset image, at least one row of redundant pixels among the plurality of redundant pixels to maintain consistency in data signals and polarities with a first row of display pixels among the plurality of display pixels, wherein the at least one row of redundant pixels is arranged adjacent to the first row of display pixels, and the preset image is specifically an image in which the plurality of display sub-pixels are alternately arranged according to a first brightness and a second brightness along both the first direction and the second direction, and the first brightness is greater than the second brightness.

[0019] In a possible implementation, the processing unit is configured to:

[0020] Before charging the first row of display pixels, the data signals and polarities of the first row of display pixels are transmitted to each of the data lines, the at least one row of redundant pixels is charged, and the data signals and polarities of the at least one row of redundant pixels are controlled to be consistent with those of the first row of display pixels.

[0021] In a possible implementation, the apparatus further includes a buffer register, where the buffer register is configured to:

[0022] After the processing unit determines the data signal and polarity of the first row of display pixels, it places the data signal and polarity of the first row of display pixels and transmits the data signal and polarity of the first row of display pixels to each of the data lines.

[0023] In a possible implementation, before the processing unit controls the data signals and polarities of at least one row of redundant pixels among the plurality of redundant pixels to be consistent with those of the first row of display pixels among the plurality of display pixels, the processing unit is further configured to:

[0024] detecting whether there are more than a preset number of pixel detection units in the image to be displayed, wherein the pixel detection units include at least one group of two display pixels arranged alternately along the first direction according to the first brightness and the second brightness, and at least one group of two display pixels arranged alternately along the second direction according to the first brightness and the second brightness;

[0025] If so, it is determined that the picture to be displayed is a preset picture.

[0026] In a third aspect, an embodiment of the present invention further provides a display device, including:

[0027] A driving device as described in any one of the above items, and a display panel electrically connected to the driving device.

[0028] In a fourth aspect, an embodiment of the present invention further provides a method for debugging a display panel, wherein the display panel includes a plurality of display pixels located in a display area, a plurality of redundant pixels located in a non-display area on one side of the display area, a plurality of gate lines extending along a first direction, and a plurality of data lines along a second direction intersecting the first direction, wherein the plurality of display pixels and the plurality of redundant pixels are arranged in an array, each of the display pixels includes a plurality of sub-pixels electrically connected to the same gate line, and along the second direction, two adjacent sub-pixels are electrically connected to different data lines, respectively, and the polarities of data signals transmitted by the two adjacent data lines are opposite. The method includes:

[0029] When the picture to be tested is a preset picture, an adjacent row of redundant pixels corresponding to when the green line of the first row of display pixels among the multiple display pixels disappears is used as at least one row of redundant pixels, and the data signal and polarity of the at least one row of redundant pixels are controlled to be consistent with those of the first row of display pixels, wherein the preset picture is specifically a picture in which the multiple display pixels are alternately arranged according to a first brightness and a second brightness along the first direction and the second direction, and the first brightness is greater than the second brightness.

[0030] In a fifth aspect, an embodiment of the present invention further provides an electronic device, comprising a processor, wherein the processor is configured to implement the steps of any of the above methods when executing a computer program stored in a memory.

[0031] In a sixth aspect, an embodiment of the present invention further provides a readable storage medium having a computer program stored thereon, wherein the computer program implements the steps of any of the above methods when executed by a processor.

[0032] The beneficial effects of the present invention are as follows:

[0033] Embodiments of the present invention provide a driving method, a driving device, a debugging method, and a display device for a display panel. When a preset image to be displayed is a preset image, at least one row of redundant pixels in a non-display area on one side of a display area is controlled to be consistent with the data signal and polarity of a first row of display pixels among the multiple display pixels, wherein the at least one row of redundant pixels is arranged adjacent to the first row of display pixels. The preset image is specifically an image in which multiple display pixels in the display area are arranged alternately according to a first brightness and a second brightness along a first direction and a second direction, wherein the first brightness is greater than the second brightness. Taking the first direction as the row direction and the second direction as the column direction as an example, when the image to be displayed is a preset image in which multiple display pixels are arranged alternately according to different brightnesses along rows and columns, the data signal and polarity of at least one row of redundant pixels adjacent to the first row of display pixels are controlled to be consistent with the data signal and polarity of the first row of display pixels, that is, the data signal and polarity of the at least one row of redundant pixels completely follow the first row of display pixels. In this way, under the preset screen, the pixel voltage period changes symmetrically, the common voltage coupling is offset, and the green line of the first row disappears, thereby avoiding the green defect of the first row and improving the display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a partial pixel structure corresponding to the Skip 1dot screen in an embodiment of the present invention;

[0035] Figure 2 Schematic diagram of pixel voltage polarity and voltage change when using single-gate and Z inversion architecture;

[0036] Figure 3 for Figure 2 Schematic diagram of common voltage offset under an exemplary embodiment;

[0037] Figure 4 A schematic structural diagram of a display panel applicable to the driving method and debugging method provided in an embodiment of the present invention;

[0038] Figure 5 A schematic diagram of a pixel architecture corresponding to four rows of at least one row of redundant pixels in a display panel driving method provided by an embodiment of the present invention;

[0039] Figure 6 A schematic diagram of a pixel architecture corresponding to a row and changes in data signals and polarity in a display panel driving method provided by an embodiment of the present invention in which at least one row of redundant pixels is provided;

[0040] Figure 7A method for driving a display panel provided by an embodiment of the present invention includes the following steps: before charging the first row of display pixels, transmitting the data signals and polarities of the first row of display pixels to each of the data lines;

[0041] Figure 8 Another method flow chart of a method for driving a display panel provided by an embodiment of the present invention;

[0042] Figure 9 A schematic diagram of one structure of a pixel detection unit in a display panel driving method provided by an embodiment of the present invention;

[0043] Figure 10 For Figure 2 A schematic diagram of test waveforms of a display panel driving method provided by an embodiment of the present invention when the pixel architecture is not adopted;

[0044] Figure 11 For Figure 6 A schematic diagram of test waveforms of a display panel driving method according to an embodiment of the present invention using a pixel architecture;

[0045] Figure 12 A schematic structural diagram of a driving device for a display panel provided by an embodiment of the present invention;

[0046] Figure 13 A schematic diagram of a structure of a display device provided by an embodiment of the present invention;

[0047] Figure 14 A flow chart of a method for debugging a display panel provided by an embodiment of the present invention;

[0048] Figure 15 The pixel architecture is based on a row of redundant pixels completely following the first row of display pixels;

[0049] Figure 16 This is the pixel architecture when two rows of redundant pixels completely follow the first row of display pixels. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. And in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] Unless otherwise defined, technical or scientific terms used in this invention shall have the same general meaning as those generally understood by persons skilled in the art in the art to which this invention pertains. Words such as "include" or "comprise" used in this invention mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0052] It should be noted that the sizes and shapes of the figures in the accompanying drawings do not reflect the actual scale and are only for the purpose of illustrating the present invention. The same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions.

[0053] Before introducing the embodiments of the present invention, Figure 1 The Skip1dot screen with special pattern screen is explained accordingly, among which, Figure 1 The left side of the figure shows the image displayed by the display panel, and the right side shows the corresponding pixel structure. Figure 1 The figure shows the partial pixel architecture corresponding to the Skip 1dot screen, where each display pixel includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel. R represents a red sub-pixel, G represents a green sub-pixel, and B represents a blue sub-pixel. "+" indicates that the polarity of the corresponding data signal is positive, and "-" indicates that the polarity of the corresponding data signal is negative. In the Skip 1dot screen, the display pixels along the row and column directions are alternately set to bright and dark. Still combined with Figure 1 In the exemplary embodiment shown, the first row displays the pixel light / dark light / dark settings, the second row displays the pixel dark / light / dark light settings, the first column displays the pixel light / dark light / dark settings, the second column displays the pixel dark / light / dark light settings, and the same applies to the light / dark settings of the pixels displayed in other rows and columns, which will not be described in detail here. It should be noted that in one exemplary embodiment, a grayscale display above L128 can be regarded as "light", and a grayscale display below L120 can be regarded as "dark"; in another exemplary embodiment, a grayscale display of L255 can be regarded as "light", and a grayscale display of L0 can be regarded as "dark". Of course, "light" and "dark" can also be set according to actual application needs, which is not limited here.

[0054] The inventors have found in actual research that in order to ensure that the pixels on the outermost edge of the active area (AA) on the array substrate in the liquid crystal display panel have the same etching environment as other pixels, that is, to ensure the etching uniformity of all pixels in the AA area, redundant pixels (DummyPixel) are usually set in the black matrix (BM) area outside the AA area. Usually, the Dummy Pixel in the BM area defaults to displaying a black screen with a grayscale of L0. When using a single gate and Zinversion (Z inversion, i.e. +﹣﹢﹣……) architecture, combined with Figure 2 Schematic diagram of pixel voltage polarity and voltage change shown in FIG. Wherein, Data1, Data2, Data3, Data4, Data5, Data6 and Data7 represent the corresponding column data lines, DATA2, DATA3, DATA4, DATA5, DATA6 and DATA7 represent the data signals loaded on the corresponding column data lines, Vcom represents the common voltage, DUMMY represents the corresponding row redundant pixels, and the 1st row, 2nd row, 3rd row and 4th row represent the corresponding row display pixels. Figure 2 As shown in the figure, the positive polarity of the first row of pixel voltages in the Skip 1dot screen is twice as negative. When the first row of pixel voltages is turned on, the common electrode is coupled upward by the pixel voltage (Couple), causing the common voltage (Vcom) level to be pulled up. The common voltage offset diagram is shown in the figure below. Figure 3 As shown. Combined Figure 3 It can be seen that after the common voltage shift, the voltage difference between the red and blue sub-pixels and Vcom decreases, while the voltage difference between the green sub-pixel and Vcom increases, causing the red and blue sub-pixels to darken and the green sub-pixel to brighten. The first row of pixels appears greenish overall to the naked eye. Subsequently, the second, third, and other rows (i.e., the remaining rows) have an equal number of positive and negative pixel voltages. The upward and downward coupling of the pixel voltages to the common electrode cancel each other out, resulting in the greenish appearance of the first row.

[0055] In view of this, embodiments of the present invention provide a driving method, a driving device, a debugging method and a display device of a display panel, which are used to avoid the green emission defect of the first row.

[0056] The driving method and debugging method provided by the embodiment of the present invention are applicable to display panels such as Figure 4Specifically, the display panel includes a plurality of display pixels located in a display area, a plurality of redundant pixels located in a non-display area on one side of the display area, a plurality of gate lines extending along a first direction, and a plurality of data lines along a second direction intersecting the first direction, wherein the plurality of display pixels and the plurality of redundant pixels are arranged in an array, each of the display pixels includes a plurality of sub-pixels electrically connected to the same gate line, and along the second direction, two adjacent sub-pixels are electrically connected to different data lines, respectively, and the polarities of the data signals transmitted by the two adjacent data lines are opposite.

[0057] Still combined Figure 4 As shown, the display panel includes a plurality of display pixels located in a display area, a plurality of redundant pixels located in a non-display area to one side of the display area, a plurality of gate lines extending along a first direction, and a plurality of data lines extending along a second direction intersecting the first direction. Reference symbol Gate represents a gate line, reference symbol Data represents a data line, the direction indicated by arrow X is the first direction, the direction indicated by arrow Y is the second direction, reference symbol A represents a display area, reference symbol B represents a non-display area, reference symbol px represents a display pixel, reference symbol dp represents a redundant pixel, and reference symbol spx represents a sub-pixel. Figure 4 Schematic diagrams illustrating one distribution of the display area and non-display area are provided. Of course, the display area and non-display area can be configured based on actual application needs and are not limited here. The specific number of display pixels and redundant pixels, as well as the specific number of gate lines and data lines, can be configured based on actual application needs and are not limited here.

[0058] Moreover, a plurality of display pixels and a plurality of redundant pixels are arranged in an array. Wherein, each display pixel includes a plurality of sub-pixels electrically connected to the same gate line, that is, each display pixel includes a plurality of sub-pixels electrically connected to the same gate line. In one exemplary embodiment, the plurality of sub-pixels included in each display pixel can be a red sub-pixel, a green sub-pixel and a blue sub-pixel, respectively. Of course, the sub-pixels included in each display pixel can also be set according to actual application needs, which is not limited here. In addition, along the second direction, two adjacent sub-pixels are electrically connected to different data lines, and the polarities of the data signals transmitted by the two adjacent data lines are opposite. It should be noted that, for the convenience of description, the electrical connection relationship between the data line and the sub-pixel is not illustrated in the relevant drawings, which does not mean that the two do not need to be electrically connected.

[0059] An embodiment of the present invention provides a method for driving a display panel, the method comprising:

[0060] When the image to be displayed is a preset image, at least one row of redundant pixels among the plurality of redundant pixels is controlled to maintain consistency with data signals and polarities of a first row of display pixels among the plurality of display pixels, wherein the at least one row of redundant pixels is arranged adjacent to the first row of display pixels, and the preset image is specifically an image in which the plurality of display pixels are alternately arranged according to a first brightness and a second brightness along both the first direction and the second direction, and the first brightness is greater than the second brightness.

[0061] During the specific implementation, the preset image is the aforementioned Skip 1dot image. Specifically, the preset image is an image in which multiple display sub-pixels are arranged alternately along a first direction and a second direction at a first brightness and a second brightness, with the first brightness being greater than the second brightness. It should be noted that in one exemplary embodiment, the first brightness and the second brightness do not specifically refer to fixed values; rather, the magnitudes between the two are relative. The specific values ​​of the first brightness and the second brightness can be set according to actual application needs and are not limited here. In the embodiments of the present invention, unless otherwise specified, the preset images mentioned are all Skip 1dot images.

[0062] When the image to be displayed is a preset image, at least one row of redundant pixels adjacent to the first row of display pixels is determined, and the data signal and polarity of the at least one row of redundant pixels are controlled to be consistent with those of the first row of display pixels. That is, the at least one row of redundant pixels completely follows the first row of display pixels. In this way, in this preset image, the pixel voltage cycles vary symmetrically, common voltage coupling cancels out, and the green line in the first row disappears, thereby avoiding the green tint defect in the first row and improving the display quality. It should be noted that the at least one row of redundant pixels is determined by pre-debugging the display panel using the Skip 1dot image to detect the green line defect in the first row. The specific debugging process is described in the relevant section below and is not detailed here.

[0063] In a specific implementation, the at least one row of redundant pixels can be one row or multiple rows, which is not limited here. The specific number of rows of the at least one row of redundant pixels can be set according to actual application needs. For example, the at least one row of redundant pixels is eight rows. In one exemplary embodiment, the pixel architecture corresponding to the at least one row of redundant pixels being four rows is shown in FIG. Figure 5 As shown, the data signals and polarities of the four rows of redundant pixels (DUMMY1, DUMMY2, DUMMY3 and DUMMY4) adjacent to the first row of display pixels completely follow the first row of display pixels.

[0064] In another exemplary embodiment, at least one row of redundant pixels is a pixel architecture corresponding to a row and a schematic diagram of changes in data signals and polarities is shown in FIG. Figure 6As shown. Figure 6 In the exemplary embodiment shown, the data signal and polarity of a row of redundant pixels (i.e., DUMMY1) adjacent to the first row of display pixels completely follow the first row of display pixels (i.e., DUMMY is the same as the first row). In the subsequent driving process, the number of positive and negative polarities of the data signals in each row of the second row, third row, etc. is equal, and the upward and downward coupling of the data signals to the common electrode offset each other, thereby reducing the common voltage coupling and solving the problem of poor green emission in the first row.

[0065] Of course, except Figure 5 and Figure 6 In addition to the exemplary following schemes, the specific number of rows of at least one row of redundant pixels may be set according to actual application needs, and a corresponding following scheme may be set accordingly, which is not limited here.

[0066] In an embodiment of the present invention, the step of controlling the data signals and polarities of at least one row of redundant pixels among the plurality of redundant pixels and the first row of display pixels among the plurality of display pixels to be consistent includes:

[0067] Before charging the first row of display pixels, the data signals and polarities of the first row of display pixels are transmitted to each of the data lines, the at least one row of redundant pixels is charged, and the data signals and polarities of the at least one row of redundant pixels are controlled to be consistent with those of the first row of display pixels.

[0068] In a specific implementation, when the image to be displayed is a preset image, before charging the first row of display pixels, the data signals and polarity of the first row of display pixels can be transmitted to each data line, and at least one row of redundant pixels can be charged via the corresponding data lines. In this way, by controlling the data signals and polarity of at least one row of redundant pixels to completely follow the first row of display pixels, the at least one row of redundant pixels is pre-charged while solving the problem of poor green lines in the first row.

[0069] In the embodiment of the present invention, Figure 7 As shown, the step: before charging the first row of display pixels, transmitting the data signals and polarities of the first row of display pixels to each of the data lines, includes:

[0070] S101: before charging the first row of display pixels, determining the data signal and polarity of the first row of display pixels;

[0071] S102: placing the data signals and polarities of the first row of display pixels in a buffer register;

[0072] S103: Transmitting the data signals and polarities of the first row of display pixels to each of the data lines via the buffer register.

[0073] In the specific implementation process, the specific implementation process of step S101 to step S103 is as follows:

[0074] First, before charging the first row of display pixels, the data signal and polarity of the first row of display pixels are determined. Specifically, a preset image (i.e., a Skip 1dot image) can be identified based on pixel characteristics, and then the data signal and polarity of the first row of display pixels included in the preset image are determined. The data signal and polarity of the first row of display pixels are then placed in a buffer register; the data signal and polarity of the first row of display pixels are then transmitted to each data line via the buffer register, so that the data signal and polarity of at least one row of redundant pixels completely follow the first row of display pixels, and the data signal and polarity of at least one row of redundant pixels are controlled to be consistent with those of the first row of display pixels, thereby achieving pre-charging of the at least one row of redundant pixels.

[0075] In the embodiment of the present invention, Figure 8 As shown, before the step of controlling the data signals and polarities of at least one row of redundant pixels among the plurality of redundant pixels to be consistent with those of the first row of display pixels among the plurality of display pixels, the method further includes:

[0076] S201: Detecting whether there are more than a preset number of pixel detection units in the image to be displayed, wherein the pixel detection units include at least one group of two display pixels arranged alternately along the first direction according to the first brightness and the second brightness, and at least one group of two display pixels arranged alternately along the second direction according to the first brightness and the second brightness;

[0077] S202: If it exists, determine that the picture to be displayed is a preset picture.

[0078] In the specific implementation process, the specific implementation process of step S301 to step S302 is as follows:

[0079] First, it is detected whether there are more than a preset number of pixel detection units in the image to be displayed, wherein the specific number of the preset number can be set according to the actual application needs and is not limited here. The pixel detection unit includes at least one group of two display pixels arranged alternately along the first direction according to the first brightness and the second brightness. Moreover, it is necessary to set the brightness of the sub-pixels included in each display pixel, for example, the brightness range of each sub-pixel is 000~111. In one exemplary embodiment, the pixel detection unit is as follows Figure 9As shown, accordingly, the pixel detection unit includes four groups of display pixels arranged alternately along the first direction according to the first brightness and the second brightness, each group of which includes two display pixels, and includes two groups of display pixels arranged alternately along the second direction according to the first brightness and the second brightness, each group of which includes four display sub-pixels; in this way, the pixel detection unit is composed of 4*2 display pixels. In practical applications, it can be Figure 9 The pixel detection unit shown is used as a feature image. Of course, the specific form of the pixel detection unit can also be set according to actual application needs, which is not limited here.

[0080] Then, if the number of pixel detection units in the display image to be tested exceeds the preset number, the display image to be displayed is determined to be the preset image. It should be noted that the preset number is a cumulative value. For example, taking a UHD product with a resolution of 3840*2160 as an example, if the preset number is greater than 3840*2160*60%, it indicates that the display image to be displayed is the preset image.

[0081] Combine Figure 10 and Figure 11 As shown, Figure 10 Shown for Figure 2 A test waveform diagram of a pixel architecture that does not adopt the driving method of the display panel provided by an embodiment of the present invention, that is, before charging the first row of display pixels, a row of redundant pixels adjacent to the first row of display pixels is not pre-charged. Figure 11 Shown for Figure 6 A schematic diagram of a test waveform of a driving method for a display panel using a pixel architecture in an embodiment of the present invention is provided, that is, the data signal and polarity of a row of redundant pixels adjacent to the first row of display pixels completely follow the first row of display pixels. Accordingly, before charging the first row of display pixels, the data signal of a row of redundant pixels adjacent to the first row of display pixels is controlled to be consistent with the first row of display pixels, thereby achieving pre-charging of the row of redundant pixels. Figure 10 In the exemplary embodiment shown, before charging the first row of display pixels, the row of redundant pixels adjacent to the first row of display pixels is not precharged, and the valid data signals of the first row of display pixels are turned on at the falling edge of the frame start signal (Start Vertical, STV). Figure 11 In the exemplary embodiment shown, before the first row of display pixels is charged, that is, before the valid data signals of the first row of display pixels are turned on at the falling edge of STV, the data signals of a row of redundant pixels adjacent to the first row of display pixels are controlled to be consistent with the first row of display pixels. Accordingly, the data signals and polarity of the row of redundant pixels adjacent to the first row of display pixels completely follow those of the first row of display pixels.

[0082] Based on the same inventive concept, Figure 12As shown, an embodiment of the present invention further provides a driving device for a display panel, the driving device comprising:

[0083] a receiving unit 10, configured to receive an image to be displayed from the display panel, wherein the display panel includes a plurality of display pixels located in a display area, a plurality of redundant pixels located in a non-display area on one side of the display area, a plurality of gate lines extending along a first direction, and a plurality of data lines along a second direction intersecting the first direction, wherein the plurality of display pixels and the plurality of redundant pixels are arranged in an array, each of the display pixels includes a plurality of sub-pixels electrically connected to the same gate line, and along the second direction, two adjacent sub-pixels are electrically connected to different data lines, respectively, and the polarities of data signals transmitted by the two adjacent data lines are opposite;

[0084] The processing unit 20 is configured to control, when the image to be displayed is a preset image, at least one row of redundant pixels among the plurality of redundant pixels to maintain consistency in data signals and polarities with a first row of display pixels among the plurality of display pixels, wherein the at least one row of redundant pixels is arranged adjacent to the first row of display pixels, and the preset image is specifically an image in which the plurality of display sub-pixels are alternately arranged according to a first brightness and a second brightness along both the first direction and the second direction, and the first brightness is greater than the second brightness.

[0085] In a specific implementation, the driving device may be a driving chip, which includes a timing controller (TCON). Exemplarily, the receiving unit 10 and the processing unit 20 are provided in the timing controller.

[0086] In this embodiment of the present invention, the processing unit 20 is configured to:

[0087] Before charging the first row of display pixels, the data signals and polarities of the first row of display pixels are transmitted to each of the data lines, the at least one row of redundant pixels is charged, and the data signals and polarities of the at least one row of redundant pixels are controlled to be consistent with those of the first row of display pixels.

[0088] In an embodiment of the present invention, the driving device further includes a buffer register, and the buffer register is used to:

[0089] After the processing unit 20 determines the data signal and polarity of the first row of display pixels, it places the data signal and polarity of the first row of display pixels and transmits the data signal and polarity of the first row of display pixels to each of the data lines.

[0090] In the embodiment of the present invention, before the processing unit 20 controls the data signals and polarities of at least one row of redundant pixels among the plurality of redundant pixels to be consistent with those of the first row of display pixels among the plurality of display pixels, the processing unit 20 is further configured to:

[0091] detecting whether there are more than a preset number of pixel detection units in the image to be displayed, wherein the pixel detection units include at least one group of two display pixels arranged alternately along the first direction according to the first brightness and the second brightness, and at least one group of two display pixels arranged alternately along the second direction according to the first brightness and the second brightness;

[0092] If so, it is determined that the picture to be displayed is a preset picture.

[0093] Based on the same inventive concept, Figure 13 As shown, an embodiment of the present invention further provides a display device, which includes:

[0094] A driving device 100 as described in any one of the above items, and a display panel 200 electrically connected to the driving device 100 .

[0095] In the embodiment of the present invention, the principle of solving the problem of the display device is similar to that of the aforementioned driving device 100 , so the implementation of the display device can refer to the implementation of the aforementioned driving device 100 , and the repeated parts are not repeated here.

[0096] In a specific implementation, the display panel may employ a liquid crystal display control method, where each display pixel may serve as one electrode of a liquid crystal capacitor, and the other electrode of the liquid crystal capacitor may be used to receive a common voltage. When a data signal is transmitted to a display pixel, the data signal charges the corresponding display pixel, thereby changing the voltage difference across the liquid crystal capacitor, allowing the liquid crystal capacitor to adjust the light transmittance and achieve image display. Accordingly, the display device may be a liquid crystal display.

[0097] The display device provided in the embodiments of the present invention can be any product or component with a display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigation system. Other essential components of the display device are well understood by those skilled in the art and are not described in detail here, nor should they be construed as limiting the present invention.

[0098] Based on the same inventive concept, an embodiment of the present invention further provides a debugging method for a display panel, wherein the display panel includes a plurality of display pixels located in a display area, a plurality of redundant pixels located in a non-display area to one side of the display area, a plurality of gate lines extending along a first direction, and a plurality of data lines along a second direction intersecting the first direction, wherein the plurality of display pixels and the plurality of redundant pixels are arranged in an array, each of the display pixels includes a plurality of sub-pixels electrically connected to the same gate line, and along the second direction, two adjacent sub-pixels are electrically connected to different data lines, respectively, and the polarities of data signals transmitted by the two adjacent data lines are opposite; the debugging method includes:

[0099] When the picture to be tested is a preset picture, an adjacent row of redundant pixels corresponding to when the green line of the first row of display pixels among the multiple display pixels disappears is used as at least one row of redundant pixels, and the data signal and polarity of the at least one row of redundant pixels are controlled to be consistent with those of the first row of display pixels, wherein the preset picture is specifically a picture in which the multiple display pixels are alternately arranged according to a first brightness and a second brightness along the first direction and the second direction, and the first brightness is greater than the second brightness.

[0100] In the specific implementation process, the specific structure of the display panel can refer to the description of the relevant parts above, and will not be repeated here.

[0101] After receiving the picture to be tested, it can be detected whether the picture to be tested is a preset picture, and the preset picture is specifically a picture in which multiple display pixels are arranged alternately according to the first brightness and the second brightness along the first direction and the second direction, wherein the first brightness is greater than the second brightness. The specific features of the corresponding preset picture can refer to the description of the aforementioned relevant parts and will not be repeated here. When the picture to be tested is a preset picture, the adjacent row of redundant pixels corresponding to the disappearance of the green line of the first row of display pixels in the multiple display pixels is used as at least one row of redundant pixels, and the data signal and polarity of at least one row of redundant pixels are controlled to be consistent with those of the first row of display pixels. In this way, the green defect of the first row of the display panel to be debugged is eliminated.

[0102] Combine Figure 14 The debugging method flow chart shown in FIG. 1 illustrates the entire process of the debugging method for the display panel provided by the embodiment of the present invention.

[0103] S1: Identify the image to be tested; illustratively, identify the image to be displayed based on pixel features;

[0104] S2: Determine whether the image to be tested is a Skip 1dot image;

[0105] S3: If the image to be tested is a Skip 1dot image, the data signal and polarity of the first line of the image are placed in a buffer register;

[0106] Correspondingly, if the image to be tested is not a Skip 1 dot image, no action is taken.

[0107] S4: Start pre-charging function;

[0108] S5: Setting the redundant pixels to completely follow the first row of display pixels; specifically, transmitting the data signals and polarities of the first row of display pixels to each data line through the buffer register, and controlling at least one row of redundant pixels to completely follow the first row of display pixels;

[0109] S6: By judging whether the common voltage coupling is offset, the number of rows of redundant pixels that completely follow the first row of display pixels is determined; if the common voltage coupling is not offset under the current row of redundant pixels, then based on the current row of redundant pixels, a row of redundant pixels that follows the first row of display pixels is added, and according to whether the current common voltage coupling is offset, the same process is repeated until the number of rows of redundant pixels when the common voltage coupling is offset and the first row of green lines disappears is determined. Subsequently, before charging the first row of display pixels of the debugged display panel, the data signal and polarity of the determined row of redundant pixels can be directly controlled to completely follow the first row of display pixels, thereby ensuring the display effect of the debugged display panel. Among them, the pixel voltage cycle of the Skip 1dot screen changes symmetrically, the common voltage coupling is offset, and the first row of green lines disappears.

[0110] In a specific implementation, for example, the display panel is provided with four rows of redundant pixels in the non-display area, which are sequentially away from the first row of display pixels, namely DUMMY1, DUMMY2, DUMMY3 and DUMMY4. If the first row of green lines disappears when one row of redundant pixels completely follows the first row of display pixels, the pixel structure can be changed as follows: Figure 15 If the first row of green lines disappears when two rows of redundant pixels completely follow the first row of display pixels, you can set the pixel structure to Figure 16 Of course, in actual applications, the pixel architecture can be set according to the specific situation when the first row of green lines disappears, and there is no limitation here.

[0111] It should be noted that during the process of identifying the test image, the entire image must be detected and identified. First, the pre-set pixel detection units and the brightness of each display pixel are determined; then, the total number of pixel detection units is counted. For example, if the number of pixel detection units is greater than 3840*2160*60%, the test image is a Skip 1dot image. The specific process of image detection and identification can be found in the description of the relevant sections above and will not be repeated here.

[0112] In addition, when the picture to be displayed or tested is a preset picture, it should be noted that the redundant pixels in each row that completely follow the data signal and polarity of the first row of display pixels can still pass a certain amount of light, thereby having the corresponding display function. However, since the redundant pixels in the corresponding row are often located in the border area in the final product, they are usually blocked by the corresponding border and cannot be seen by the naked eye, which will not affect the display effect of the display panel to a certain extent.

[0113] Based on the same inventive concept, an embodiment of the present invention further provides an electronic device, which includes a processor, and the processor is configured to implement the steps of any of the aforementioned methods when executing a computer program stored in a memory.

[0114] Based on the same inventive concept, an embodiment of the present invention further provides a readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of any of the methods described above are implemented.

[0115] Embodiments of the present invention provide a driving method, a driving device, a debugging method, and a display device for a display panel. When determining whether a to-be-displayed image is a preset image, at least one row of redundant pixels in a non-display area on one side of a display area is controlled to maintain consistency with the data signal and polarity of a first row of display pixels among the plurality of display pixels. The at least one row of redundant pixels is disposed adjacent to the first row of display pixels. The preset image is specifically a image in which the plurality of display pixels in the display area are arranged alternately along a first direction and a second direction at a first brightness and a second brightness, wherein the first brightness is greater than the second brightness. Taking the first direction as the row direction and the second direction as the column direction as an example, when the to-be-displayed image is a preset image in which the plurality of display pixels are arranged alternately along rows and columns at different brightnesses, the data signal and polarity of the at least one row of redundant pixels adjacent to the first row of display pixels are controlled to maintain consistency with the data signal and polarity of the first row of display pixels, i.e., the at least one row of redundant pixels completely follows the first row of display pixels. Consequently, in the preset image, the pixel voltage cycles vary symmetrically, the common voltage coupling is offset, and the green line in the first row disappears, thereby avoiding poor greening in the first row and improving the display quality.

[0116] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0117] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0118] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0119] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0120] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0121] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A method for driving a display panel, characterized in that: The display panel includes a plurality of display pixels located in a display area, a plurality of redundant pixels located in a non-display area on one side of the display area, a plurality of gate lines extending along a first direction, and a plurality of data lines along a second direction intersecting the first direction, wherein the plurality of display pixels and the plurality of redundant pixels are arranged in an array, each of the display pixels includes a plurality of sub-pixels electrically connected to the same gate line, and along the second direction, two adjacent sub-pixels are electrically connected to different data lines, respectively, and the polarities of data signals transmitted by the two adjacent data lines are opposite. The method includes: When the image to be displayed is a preset image, at least one row of redundant pixels among the plurality of redundant pixels is controlled to maintain consistency with data signals and polarities of a first row of display pixels among the plurality of display pixels, wherein the at least one row of redundant pixels is arranged adjacent to the first row of display pixels, and the preset image is specifically an image in which the plurality of display pixels are alternately arranged according to a first brightness and a second brightness along both the first direction and the second direction, and the first brightness is greater than the second brightness.

2. The method according to claim 1, wherein The controlling the data signals and polarities of at least one row of redundant pixels among the plurality of redundant pixels and the first row of display pixels among the plurality of display pixels to be consistent includes: Before charging the first row of display pixels, the data signals and polarities of the first row of display pixels are transmitted to each of the data lines, the at least one row of redundant pixels is charged, and the data signals and polarities of the at least one row of redundant pixels are controlled to be consistent with those of the first row of display pixels.

3. The method according to claim 2, wherein Before charging the first row of display pixels, transmitting the data signals and polarities of the first row of display pixels to each of the data lines includes: Before charging the first row of display pixels, determining the data signal and polarity of the first row of display pixels; placing the data signals and polarities of the first row of display pixels in a buffer register; The data signals and polarities of the first row of display pixels are transmitted to each of the data lines through the buffer register.

4. The method according to any one of claims 1 to 3, wherein Before controlling the data signals and polarities of at least one row of redundant pixels among the plurality of redundant pixels to be consistent with those of the first row of display pixels among the plurality of display pixels, the method further includes: detecting whether there are more than a preset number of pixel detection units in the image to be displayed, wherein the pixel detection units include at least one group of two display pixels arranged alternately along the first direction according to the first brightness and the second brightness, and at least one group of two display pixels arranged alternately along the second direction according to the first brightness and the second brightness; If so, it is determined that the picture to be displayed is a preset picture.

5. A driving device for a display panel, characterized in that: include: a receiving unit, configured to receive an image to be displayed from the display panel, wherein the display panel includes a plurality of display pixels located in a display area, a plurality of redundant pixels located in a non-display area on one side of the display area, a plurality of gate lines extending along a first direction, and a plurality of data lines along a second direction intersecting the first direction, wherein the plurality of display pixels and the plurality of redundant pixels are arranged in an array, each of the display pixels includes a plurality of sub-pixels electrically connected to the same gate line, and along the second direction, two adjacent sub-pixels are electrically connected to different data lines, respectively, and the polarities of data signals transmitted by the two adjacent data lines are opposite; a processing unit, configured to control, when the image to be displayed is a preset image, at least one row of redundant pixels among the plurality of redundant pixels to maintain consistency in data signals and polarities with a first row of display pixels among the plurality of display pixels, wherein the at least one row of redundant pixels is arranged adjacent to the first row of display pixels, and the preset image is specifically an image in which the plurality of display pixels are alternately arranged according to a first brightness and a second brightness along both the first direction and the second direction, and the first brightness is greater than the second brightness.

6. The device according to claim 5, characterized in that The processing unit is used for: Before charging the first row of display pixels, the data signals and polarities of the first row of display pixels are transmitted to each of the data lines, the at least one row of redundant pixels is charged, and the data signals and polarities of the at least one row of redundant pixels are controlled to be consistent with those of the first row of display pixels.

7. The device according to claim 6, characterized in that The apparatus further includes a buffer register, wherein the buffer register is configured to: After the processing unit determines the data signal and polarity of the first row of display pixels, it places the data signal and polarity of the first row of display pixels and transmits the data signal and polarity of the first row of display pixels to each of the data lines.

8. The device according to any one of claims 5 to 7, characterized in that Before the processing unit controls the data signals and polarities of at least one row of redundant pixels among the plurality of redundant pixels to be consistent with those of the first row of display pixels among the plurality of display pixels, the processing unit is further configured to: detecting whether there are more than a preset number of pixel detection units in the image to be displayed, wherein the pixel detection units include at least one group of two display pixels arranged alternately along the first direction according to the first brightness and the second brightness, and at least one group of two display pixels arranged alternately along the second direction according to the first brightness and the second brightness; If so, it is determined that the picture to be displayed is a preset picture.

9. A display device, characterized in that: include: A driving device according to any one of claims 5 to 7, and a display panel electrically connected to the driving device.

10. A method for debugging a display panel, characterized in that: The display panel includes a plurality of display pixels located in a display area, a plurality of redundant pixels located in a non-display area on one side of the display area, a plurality of gate lines extending along a first direction, and a plurality of data lines along a second direction intersecting the first direction, wherein the plurality of display pixels and the plurality of redundant pixels are arranged in an array, each of the display pixels includes a plurality of sub-pixels electrically connected to the same gate line, and along the second direction, two adjacent sub-pixels are electrically connected to different data lines, respectively, and the polarities of data signals transmitted by the two adjacent data lines are opposite. The method includes: When the picture to be tested is a preset picture, an adjacent row of redundant pixels corresponding to when the green line of the first row of display pixels among the multiple display pixels disappears is used as at least one row of redundant pixels, and the data signal and polarity of the at least one row of redundant pixels are controlled to be consistent with those of the first row of display pixels, wherein the preset picture is specifically a picture in which the multiple display pixels are alternately arranged according to a first brightness and a second brightness along the first direction and the second direction, and the first brightness is greater than the second brightness.

Images